Add first specs

Author: Federico Moya

.gitignore

@@ -0,0 +1,3 @@
+.byebug_history
+tmp
+

.rubocop.yml

@@ -1,4 +1,6 @@
 AllCops:
+  Exclude:
+    - 'spec/fixtures/**/*'
   TargetRubyVersion: 2.4
 
 Style/Documentation:

Gemfile

@@ -5,6 +5,10 @@ source 'https://rubygems.org'
 group :development do
   gem 'byebug'
   gem 'rake', '~> 12.0'
+  gem 'rspec', '~> 3.2'
   gem 'rubocop'
-  gem 'test-unit'
+end
+
+group :test do
+  gem 'simplecov', '~> 0.18'
 end

Gemfile.lock

@@ -3,14 +3,28 @@ GEM
   specs:
     ast (2.4.1)
     byebug (11.1.3)
+    diff-lcs (1.4.4)
+    docile (1.3.2)
     parallel (1.19.2)
     parser (2.7.1.4)
       ast (~> 2.4.1)
-    power_assert (1.2.0)
     rainbow (3.0.0)
     rake (12.3.3)
     regexp_parser (1.7.1)
     rexml (3.2.4)
+    rspec (3.9.0)
+      rspec-core (~> 3.9.0)
+      rspec-expectations (~> 3.9.0)
+      rspec-mocks (~> 3.9.0)
+    rspec-core (3.9.2)
+      rspec-support (~> 3.9.3)
+    rspec-expectations (3.9.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.9.0)
+    rspec-mocks (3.9.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.9.0)
+    rspec-support (3.9.3)
     rubocop (0.89.1)
       parallel (~> 1.10)
       parser (>= 2.7.1.1)
@@ -23,8 +37,10 @@ GEM
     rubocop-ast (0.3.0)
       parser (>= 2.7.1.4)
     ruby-progressbar (1.10.1)
-    test-unit (3.3.6)
-      power_assert
+    simplecov (0.18.5)
+      docile (~> 1.1)
+      simplecov-html (~> 0.11)
+    simplecov-html (0.12.2)
     unicode-display_width (1.7.0)
 
 PLATFORMS
@@ -33,8 +49,9 @@ PLATFORMS
 DEPENDENCIES
   byebug
   rake (~> 12.0)
+  rspec (~> 3.2)
   rubocop
-  test-unit
+  simplecov (~> 0.18)
 
 BUNDLED WITH
    2.1.0

Makefile

@@ -1,11 +1,14 @@
-.PHONY: image test sh
+.PHONY: image test format sh
 
 image: 
 	docker image build -t simplecov-json-formatter .
 
 test:
 	./bin/run-image rake
 
+format:
+	./bin/run-image rubocop -a
+
 sh:
 	./bin/run-image sh
 

Rakefile

@@ -2,12 +2,9 @@
 
 require 'bundler/setup'
 require 'rake/testtask'
+require 'rspec/core/rake_task'
 
-Rake::TestTask.new(:test) do |t|
-  t.libs << 'test'
-  t.libs << 'lib'
-  t.test_files = FileList['test/**/*_test.rb']
-end
+RSpec::Core::RakeTask.new(:spec)
 
 begin
   require 'rubocop/rake_task'
@@ -18,4 +15,4 @@ rescue LoadError
   end
 end
 
-task default: %i[rubocop test]
+task default: %i[rubocop spec]

spec/fixtures/sample.json

@@ -0,0 +1,30 @@
+{
+  "meta": {
+    "simplecov_version": "0.18.5"
+  },
+  "coverage": {
+    "/gem/spec/fixtures/sample.rb": {
+      "lines": [
+        null,
+        1,
+        1,
+        1,
+        null,
+        null,
+        1,
+        1,
+        null,
+        null,
+        "ignored",
+        "ignored",
+        "ignored",
+        "ignored",
+        "ignored",
+        null
+      ],
+      "branches": [
+
+      ]
+    }
+  }
+}

spec/fixtures/sample.rb

@@ -0,0 +1,16 @@
+# Foo class
+class Foo
+  def initialize
+    @foo = "baz"
+  end
+
+  def bar
+    @foo
+  end
+
+  #:nocov:
+  def skipped
+    @foo * 2
+  end
+  #:nocov:
+end

spec/simplecov_json_formatter_spec.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+require 'byebug'
+
+describe SimpleCov::Formatter::JSONFormatter do
+  let(:result) do
+    SimpleCov::Result.new({
+                            source_fixture('sample.rb') => { 'lines' => [nil, 1, 1, 1, nil, nil, 1, 1, nil, nil] }
+                          })
+  end
+
+  describe 'format' do
+    it 'works' do
+      subject.format(result)
+      expect(json_ouput).to eq(json_result('sample'))
+    end
+  end
+end

spec/spec_helper.rb

@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+require 'rspec'
+require 'simplecov'
+require 'simplecov_json_formatter'
+
+SimpleCov.coverage_dir('tmp/coverage')
+
+def source_fixture(filename)
+  File.expand_path(File.join(File.dirname(__FILE__), 'fixtures', filename))
+end
+
+def json_ouput
+  JSON.parse(File.read('tmp/coverage/coverage.json'))
+end
+
+def json_result(filename)
+  file = File.read(source_fixture("#{filename}.json"))
+  JSON.parse(file)
+end